determine_median bug

- Fixed a determine_median error, related to an error that crept in testing
  although it is not currently used, it was included incorrectly as in
  patterning the value range of the timeseries had has already been panda.Series
  into an array.  Committed to master branch.
Modified:
skyline/skyline/analyzer/algorithms.py
skyline/skyline/analyzer_dev/algorithms_dev.py
skyline/skyline/mirage/mirage_algorithms.py

skyline/analyzer/algorithms.py

@@ -412,14 +412,14 @@ def record_algorithm_error(algorithm_name, traceback_format_exc_string):
         return False
 
 
-def determine_median(array):
+def determine_median(timeseries):
     """
-    Determine the median in an array of values
+    Determine the median of the values in the timeseries
     """
 
     # logger.info('Running ' + str(get_function_name()))
     try:
-        np_array = np.array(array)
+        np_array = pandas.Series([x[1] for x in timeseries])
     except:
         return False
     try:

skyline/analyzer_dev/algorithms_dev.py

@@ -328,14 +328,14 @@ def ks_test(timeseries):
         return None
 
 
-def determine_median(array):
+def determine_median(timeseries):
     """
-    Determine the median in an array of values
+    Determine the median of the values in the timeseries
     """
 
     # logger.info('Running ' + str(get_function_name()))
     try:
-        np_array = np.array(array)
+        np_array = pandas.Series([x[1] for x in timeseries])
     except:
         return False
     try:

skyline/mirage/mirage_algorithms.py

@@ -389,14 +389,14 @@ def record_algorithm_error(algorithm_name, traceback_format_exc_string):
         return False
 
 
-def determine_median(array):
+def determine_median(timeseries):
     """
-    Determine the median in an array of values
+    Determine the median of the values in the timeseries
     """
 
     # logger.info('Running ' + str(get_function_name()))
     try:
-        np_array = np.array(array)
+        np_array = pandas.Series([x[1] for x in timeseries])
     except:
         return False
     try: